US20050016302A1 - Traction apparatus - Google Patents
Traction apparatus Download PDFInfo
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- US20050016302A1 US20050016302A1 US10/838,158 US83815804A US2005016302A1 US 20050016302 A1 US20050016302 A1 US 20050016302A1 US 83815804 A US83815804 A US 83815804A US 2005016302 A1 US2005016302 A1 US 2005016302A1
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- tubular
- module
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- inspection
- tractor
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- 238000000034 method Methods 0.000 claims abstract description 39
- 239000012530 fluid Substances 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 230000033001 locomotion Effects 0.000 claims abstract description 5
- 238000007689 inspection Methods 0.000 claims description 33
- 238000005070 sampling Methods 0.000 claims description 8
- 238000002955 isolation Methods 0.000 claims description 5
- 230000010363 phase shift Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 claims 2
- 238000005520 cutting process Methods 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 2
- 230000026058 directional locomotion Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/28—Constructional aspects
- F16L55/30—Constructional aspects of the propulsion means, e.g. towed by cables
- F16L55/38—Constructional aspects of the propulsion means, e.g. towed by cables driven by fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/049—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes having self-contained propelling means for moving the cleaning devices along the pipes, i.e. self-propelled
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/049—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes having self-contained propelling means for moving the cleaning devices along the pipes, i.e. self-propelled
- B08B9/051—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes having self-contained propelling means for moving the cleaning devices along the pipes, i.e. self-propelled the cleaning devices having internal motors, e.g. turbines for powering cleaning tools
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
- E21B23/001—Self-propelling systems or apparatus, e.g. for moving tools within the horizontal portion of a borehole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
- E21B23/14—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells for displacing a cable or cable-operated tool, e.g. for logging or perforating operations in deviated wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/18—Anchoring or feeding in the borehole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/002—Survey of boreholes or wells by visual inspection
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/08—Measuring diameters or related dimensions at the borehole
- E21B47/085—Measuring diameters or related dimensions at the borehole using radiant means, e.g. acoustic, radioactive or electromagnetic
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
- E21B49/081—Obtaining fluid samples or testing fluids, in boreholes or wells with down-hole means for trapping a fluid sample
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L2101/00—Uses or applications of pigs or moles
- F16L2101/10—Treating the inside of pipes
- F16L2101/12—Cleaning
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Geophysics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Tyre Moulding (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
Description
- This application claims benefit of U.S. Provisional patent application Ser. No. 60/466,605, filed Apr. 30, 2003, which application is herein incorporated by reference in its entirety.
- 1. Field of the Invention
- Embodiments of the present invention generally relate to a completion operation. More particularly, the present invention relates to a method and an apparatus for transporting a tool into a tubular and performing an operation.
- 2. Description of the Related Art
- The safe and continuous operation of hydrocarbon wellbores and pipeline networks is essential to the operators and users of such networks. Accordingly, such pipeline and wellbores are cleaned and inspected at regular intervals to ensure their operational integrity.
- The conventional approach to inspection of operating pipelines is for the tubular string to be precleaned several times using a “dumb” pig. The dumb pig, without any on-board intelligence, typically operates to scrape and remove debris such as wax, scale, sand, and other foreign matter from the tubular. In a newly formed pipeline with a new tubular string, the step of precleaning may not be required. In either case, a detailed inspection is subsequently performed by a “smart” pig, which makes detailed measurements of the tubular string to determine the internal condition of the tubular. The smart pig may also be employed to transport a tool to a predetermined location in the tubular string to perform various operations therein. The smart pig is typically equipped with technologies of varying sophistication. For example, the smart pig may include a mechanism for measuring an interior surface of the tubular string. In another example, the smart pig may include techniques such as magnetic flux leakage (MFL) or ultrasonic scanning (at various positions along the tubular string) to detect flaws or defects, which might prejudice the tubular's integrity. In other examples, the smart pig may include complex tools generally comprising arrays of probes and sensors for placement of on-line monitoring equipment for later collection or for precise placement of isolation components and radioactive devices.
- One shortcoming of conventional pigging inspection operations is that a complicated technique is typically required to position the smart pig at a predetermined location in the tubular string prior to the inspection of the tubular string. For example, one technique requires reversing the flow of fluid in the tubular string to direct the smart pig in the desired direction. This manipulation of the fluid flow may cause numerous problems such as storage problems and production problems. Another technique requires additional components to be constructed adjacent to the tubular string such as a sub-sea pig facility or a second line. These components are used to introduce the smart pig to the predetermined location in the tubular string so that the smart pig can conduct an inspection of the tubular string as it returns to the platform with the flow of fluid in the tubular string. For instance, the second line is constructed adjacent to the tubular string to provide a fluid pathway to pump the smart pig from the platform to the predetermined point in the tubular string. However, these additional components increase the cost of the conventional pigging inspection operation and add undesirable complexity the completion operation.
- In a similar manner, a cleaning apparatus or an inspection apparatus may be employed in a wellbore by urging the cleaning apparatus or the inspection apparatus through the wellbore on a string member. However, this technique increases the cost of the wellbore operation.
- More recently, an apparatus commonly known as a tractor has been developed that is capable of entering a tubular string at a predetermined point of the tubular string and traveling through the tubular string. The tractor subsequently returns through the same tubular string back to the predetermined point. However, the tractor has not been effectively utilized in conjunction with a pig or other inspection or cleaning tools requiring transportation through a tubular string.
- A need therefore exists for a method and apparatus of using a tractor in conjunction with other tools to transport and/or place tools in a pipeline or a wellbore.
- The present invention generally relates to a method and apparatus for performing an operation in a tubular string. In one aspect, a method comprises positioning an apparatus in the tubular, the apparatus having a tractor portion and an auxiliary module. The method further includes operating the tractor portion to move the apparatus through the tubular and operating the auxiliary module to perform the operation in the tubular.
- In another aspect, an apparatus for use in a tubular is provided. The apparatus comprises a tractor having a drive member for moving the apparatus in a desired direction, a turbine member adapted to be driven by moving fluid and a conversion member for converting movement of the turbine member to power the drive member. The apparatus further includes an auxiliary module for use in performing an operation in the tubular.
- So that the manner in which the above recited features of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only typical embodiments of this invention and are therefore not to be considered limiting of its scope, for the invention may admit to other equally effective embodiments.
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FIG. 1 is a sectional view illustrating a traction apparatus with a wax cutting module in accordance with the present invention. -
FIG. 2 is a sectional view illustrating the traction apparatus with a tubular wall thickness inspection module. -
FIG. 3 is a sectional view illustrating the traction apparatus with a tubular wall surface inspection module. -
FIG. 4 is a sectional view illustrating the traction apparatus with a component placement module. - In general, the present invention relates to an apparatus for, and method of, performing an operation by utilizing a tractor to transport an auxiliary module into a tubular. The tractor is an apparatus that is arranged to be driven in the either direction as the fluid in the tubular, but is preferably arranged to be driven in the opposite direction to the fluid flow, that is upstream or against the flow. The tractor is employed for transporting the auxiliary module capable of performing an operation such as detecting a physical condition in the tubular by obtaining data along the entire length of the tubular string, wherein the data is representative of the physical condition. As herein defined, the term “tubular” may refer to a casing for use in a wellbore, a pipe for use in a pipeline or any other type of tubular used in the oil and gas industry. Furthermore, the term “auxiliary module” is defined as any component used to perform an operation in a tubular. To better understand the novelty of the apparatus of the present invention and the methods of use thereof, reference is hereafter made to the accompanying drawings.
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FIG. 1 is a sectional view illustrating atraction apparatus 100 with awax cutting module 150 in accordance with the present invention. Herein, the components of theapparatus 100 will be described generally as it relates to the present invention. The components are described in greater detail in U.S. Pat. No. 6,722,442, issued to Simpson on Apr. 20, 2004, entitled SUBSURFACE APPARATUS and U.S. Patent Application Publication 2004/0045474, published on Mar. 11, 2004, entitled BI-DIRECTIONAL TRACTION APPARATUS, both of which are herein incorporated by reference in their entirety. - The
apparatus 100 includes a generallycylindrical body 105 upon which is mounted arotatable member 110. Therotatable member 110 is typically a turbine rotor having a number of generallyhelical blades 130. Therotatable member 110 is operatively attached to a central drive shaft (not shown) via aconversion member 115 such as a gear box. The central drive shaft provides power to adrive member 120. Generally, thedrive member 120 comprises a plurality ofleg members 125. - The
leg members 125 each comprise acam 135 mounted on the drive shaft and six elastomer orcompression fingers 145 which are oscillated or swashed backwards and forwards by the rotation of the drive shaft. As described in U.S. Pat. No. 6,722,442, thecams 135 are offset to vary the traction provided by eachleg member 125 such that rotation of the drive shaft will cause theapparatus 100 to move through a tubular (not shown) contacted by the ends of thefingers 145. Thefingers 145 are mounted on therespective cams 135 viabearings 140 and by moving thefingers 145 from one side of the bearing center line to the other it is possible to reverse the direction of traction and to facilitate movement of theapparatus 100 in the opposite direction to the original drive direction. - It is within the scope of the present invention to capture and use the excess power generated by the
rotatable member 110 in theapparatus 100 to power the auxiliary module, such as thewax cutting module 150. This may be accomplished by capturing the energy either mechanically, hydraulically, or electrically directly from theconversion member 115. Additionally, the rotation of the drive shaft could be used to rotate a sensor for inspection purposes. - The
wax cutting module 150 is adapted to fit at the front end of theapparatus 100 for use in breaking up wax and other deposits from a wall of the tubular. Thewax cutting module 150 is operatively attached to the drive shaft through a gear box (not shown) to provide an appropriate rotational speed. Typically, thewax cutting module 150 includes two cutting blades (not shown) mounted withinrespective rings wax cutting module 150 also includes a set of axially and radially extendingblades 165 between the tworings - In operation, the
wax cutting module 150 is rotated and urged through the tubular by theapparatus 100 to break up wax and other deposits on the inner surface of the tubular. Upon dislodging the wax and other deposits such as scale or asphaltene, the deposits are washed past theapparatus 100 and subsequently out of the tubular by flowing fluid in the opposite direction to the directional movement of theapparatus 100. In another embodiment, brush members (not shown) may be attached to an outer surface ofseveral fingers 145. As theapparatus 100 moves through the tubular, the brush members are oscillated or swashed backwards and forwards along withfingers 145 to break up wax and other deposits on the inner surface of the tubular. As set forth above, the deposits are then washed past theapparatus 100 by flowing fluid in the opposite direction to the directional movement of theapparatus 100. -
FIG. 2 is a sectional view illustrating thetraction apparatus 100 with a tubular wallthickness inspection module 200. In a similar manner as set forth above, the tubular wallthickness inspection module 200 is transported through the tubular attached to theapparatus 100. - The tubular wall
thickness inspection module 200 is adapted to fit at the front end of theapparatus 100 for use in measuring the thickness of the tubular using an electromagnetic technique. The result is presented as a type of tubular-inspection log, giving an estimate of metal loss and detecting corrosion. In operation, acoil 205 centered inside the tubular generates an alternating magnetic field. Another coil (not shown) measures the phase shift introduced by the tubular. This phase shift depends on the tubular-wall thickness and internal diameter, as well as the tubular conductivity and magnetic permeability. The effects change at different frequencies, so that by varying the frequency, the thickness and internal diameter can be uniquely determined. It should be noted that an array of electromagnetic members may employed with theapparatus 100 without departing from principles of the present invention. An example of a magnet assembly for pipeline inspection equipment is described in GB 1510225 and GB 1535252, both of which are herein incorporated by reference in their entirety. Electromagnetic thickness can also be measured using other techniques such as a tubular-potential profile or a flux-leakage measurement. - In another embodiment, an ultrasonic caliper (not shown) may be employed in the tubular wall
thickness inspection module 200. The ultrasonic caliper is a device for measuring the internal diameter of the tubular using high-frequency acoustic signals. In operation, a transducer (not shown) emits a high-frequency pulse that is reflected by the tubular wall back to the transducer. The diameter is determined from the time of flight of this echo and the fluid acoustic velocity. The transducer is rotated to produce a cross section of the tubular size and full-coverage images of the tubular wall. The measurement has high resolution and is used to detect deformations, the buildup of scale, or metal loss due to corrosion. The amplitude of the echo from the inner tubular surface provides qualitative information on the state of the surface, such as corrosion. Tubular thickness may also be measured simultaneously, either by analysis of the tubular resonance signal or by detecting separately the echoes from the inner and outer tubular surfaces. It should be noted that an array of ultrasonic calipers may employed with theapparatus 100 without departing from principles of the present invention. -
FIG. 3 is a sectional view illustrating thetraction apparatus 100 with a tubular wallsurface inspection module 250. In a similar manner as set forth above, thesurface inspection module 250 is transported through the tubular attached to theapparatus 100. - As illustrated, the wall
surface inspection module 250 is adapted to fit at a back end of theapparatus 100 for use in measuring the interior surface of the tubular string using amultifinger caliper 255 having a plurality ofarms 260. By using a large number ofarms 260 or fingers, thecaliper 255 can detect small changes in the wall of the tubular. The main purpose of the measurement is to detect deformations, the buildup of scale, or metal loss due to corrosion. In operation, the wallsurface inspection module 250 is urged through the tubular by theapparatus 100 to measure the interior surface of the tubular. Upon contact with a deformation in the tubular, thearms 260 move radially and subsequently send a signal to a memory storage unit (not shown) in thesurface inspection module 250 for later use in profiling the interior surface of the tubular. - In another embodiment, an inspection camera (not shown) may be employed in the tubular wall
surface inspection module 250. The camera is appropriately positioned to take pictures of the interior surface of the tubular as theapparatus 100 moves therethrough. The camera may also be rotated to capture full coverage images of the interior surface of the tubular by operatively attaching the camera to the drive shaft via a gear box (not shown) to provide an appropriate rotational speed. -
FIG. 4 is a sectional view illustrating thetraction apparatus 100 with acomponent placement module 300. In a similar manner as set forth above, thecomponent placement module 300 is transported through the tubular attached to theapparatus 100. - As illustrated, the
component placement module 300 is adapted to fit at a back end of theapparatus 100 for use in the placement ofcomponents 320 in the tubular. Thecomponents 320 may be used for acquiring data representative of characteristics of contents of the tubular at predetermined locations in the tubular. Thecomponents 320 may also be used for acquiring data about the other characteristics of the tubular, such as temperature and pressure. It should be understood, however, that thecomponent placement module 300 may be located at any position on theapparatus 100, without departing from principles of the present invention. - The
component placement module 300 typically includes asensor 305, such as an odometer, for determining the distance traveled by theapparatus 100 in the tubular. Thecomponent placement module 300 further includes achamber 310 for housing thecomponents 320. Thechamber 310 includes anejection device 315 for ejecting thecomponents 320 at the predetermined location in the tubular. An example of a method and an apparatus for monitoring conditions in pipelines is described in WO 02/16908, which is herein incorporated by reference in its entirety. - In operation, the
component placement module 300 is urged through the tubular by theapparatus 100 to place thecomponents 320 in the tubular. As theapparatus 100 and thecomponent placement module 300 approach a predetermined location in the tubular, thesensor 305 sends a signal to theejection device 315 to release one of thecomponents 320 from thechamber 310. After thecomponent 320 is placed in the tubular, theapparatus 100 andplacement module 300 both travel through the tubular to the next predetermined location and the ejection procedure is repeated until eachcomponent 320 is positioned in the tubular. Thereafter, thecomponents 320 collect data for a predetermined period of time and then may be collected to obtain the data or the data is read by an external device (not shown). - In another embodiment, the
component placement module 300 andapparatus 100 may be adapted to transport and place an isolation member (not shown) at a predetermined location in the tubular. The isolation member may be released in a similar manner as discussed above by using thesensor 305 to determine the predetermined location and using theejection device 315 to release and activate the isolation member. Thereafter, a portion of the tubular is isolated from another portion of the tubular. - In another embodiment, the
component placement module 300 andapparatus 100 may be adapted to transport and place a member (not shown) having a detectable source of signals, such as a tracker or location tool, at a predetermined location in the tubular. The member typically emits acoustic or radio signals. The member may be released in a similar manner as discussed above by using thesensor 305 to determine the predetermined location and using theejection device 315 to release and activate the member. - In another embodiment, a sampling module (not shown) may be adapted to fit on the
apparatus 100 for sampling product or contaminant, such as water at tubular low points. In a similar manner as set forth above, the sampling module is transported through the tubular attached to theapparatus 100. Preferably, the sampling module includes a timer or a sensor that sends a signal to open the container at a predetermined location in the tubular and then close the container after it fills with product or contaminant. Thereafter, theapparatus 100 returns the sampling module back to the surface of the tubular or to another predetermined location. - While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (23)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/838,158 US7051587B2 (en) | 2003-04-30 | 2004-04-30 | Traction apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US46660503P | 2003-04-30 | 2003-04-30 | |
US10/838,158 US7051587B2 (en) | 2003-04-30 | 2004-04-30 | Traction apparatus |
Publications (2)
Publication Number | Publication Date |
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US20050016302A1 true US20050016302A1 (en) | 2005-01-27 |
US7051587B2 US7051587B2 (en) | 2006-05-30 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US10/838,158 Expired - Fee Related US7051587B2 (en) | 2003-04-30 | 2004-04-30 | Traction apparatus |
Country Status (3)
Country | Link |
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US (1) | US7051587B2 (en) |
CA (1) | CA2465926C (en) |
GB (1) | GB2401130B (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040045474A1 (en) * | 2000-11-24 | 2004-03-11 | Simpson Neil Andrew Abercrombie | Bi-directional traction apparatus |
US20050229342A1 (en) * | 2002-03-15 | 2005-10-20 | Simpson Neil Andrew A | Tractors for movement along a pipeline within a fluid flow |
WO2009020889A1 (en) * | 2007-08-09 | 2009-02-12 | Thrubit Llc | Through-mill wellbore optical inspection and remediation apparatus and methodology |
US20090101670A1 (en) * | 2007-10-22 | 2009-04-23 | The Fountainhead Group, Inc. | Mixing applicator |
US20090159295A1 (en) * | 2007-12-21 | 2009-06-25 | Guerrero Julio C | Wellsite Systems Utilizing Deployable Structure |
US20090158674A1 (en) * | 2007-12-21 | 2009-06-25 | Schlumberger Technology Corporation | System and methods for actuating reversibly expandable structures |
WO2009133404A1 (en) * | 2008-05-01 | 2009-11-05 | Pipeline Engineering & Supply Company Limited | Pipeline monitoring apparatus and method |
US20100243274A1 (en) * | 2007-12-21 | 2010-09-30 | Guerrero Julio C | Expandable structure for deployment in a well |
WO2010112808A1 (en) * | 2009-03-31 | 2010-10-07 | Industrial Brushware Limited | Improved pig with adjustable turbine blades and cutting head |
US20110303025A1 (en) * | 2010-05-10 | 2011-12-15 | MIC Corrosion Tek, LLC | Apparatus and methods for obtaining 3-phase (liquid, gas and solid) microbiological samples from pipes, pipelines, tanks and other vessels |
DE102013002386A1 (en) * | 2013-02-13 | 2014-08-14 | Open Grid Europe Gmbh | Method for checking buried under-ground pipe line for transportation of natural gas, involves regulating velocity of inspection apparatus by using coupling fluid, so that velocity does not exceed given value during examination of line |
CN104511460A (en) * | 2013-10-08 | 2015-04-15 | 天太·郭元焜 | Internal automatic rotating cleaning machine for pipe |
CN109622522A (en) * | 2019-02-01 | 2019-04-16 | 合肥特安先锋机器人科技有限公司 | The cutting and grinding device of pipe dredging machine people |
EP3671204A1 (en) * | 2018-12-19 | 2020-06-24 | Cokebusters Limited | Pig for inspecting a tubular object |
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Also Published As
Publication number | Publication date |
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GB0409738D0 (en) | 2004-06-09 |
US7051587B2 (en) | 2006-05-30 |
CA2465926C (en) | 2009-08-25 |
GB2401130A (en) | 2004-11-03 |
CA2465926A1 (en) | 2004-10-30 |
GB2401130B (en) | 2006-11-01 |
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